CN203069863U - Adjusting device applied to coincidence of image point in prism reflector and reflector reference point - Google Patents
Adjusting device applied to coincidence of image point in prism reflector and reflector reference point Download PDFInfo
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- CN203069863U CN203069863U CN 201220709376 CN201220709376U CN203069863U CN 203069863 U CN203069863 U CN 203069863U CN 201220709376 CN201220709376 CN 201220709376 CN 201220709376 U CN201220709376 U CN 201220709376U CN 203069863 U CN203069863 U CN 203069863U
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- prism
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Abstract
The utility model discloses an adjusting device applied to coincidence of an image point in a prism reflector and a reflector reference point. The adjusting device comprises a rotating shaft (1), a prism bracket (2), a connecting shaft (3), a prism frame (4), a prism holder (5) and a prism (6). The adjusting device has the advantage that the design principle of coincidence of the image point and reflector axis intersection point is met, and high precision measurement is realized; the adjusting device has the outstanding characteristics of simple structure, strong stability, low cost, convenient processing, simple assembly and easy mass production, and makes up for the deficiencies of thread machining errors; a rubber pad 7 is put between the prism frame 4 and the prism 6, so as to play the roles of shock resistance and fixation; a friction pad 9 is put between the prism frame 4 and the prism bracket 2, and the friction pad has an elastic property, thus the prism does not rotate and the friction action can be enhanced; by aiming at a ridge intersection point of the prism, pitching and tilting are respectively carried out on the prism, so that the prism rotates around the axis, and image point rocking size and direction are discriminated; and three adjustment screws and connecting thread are adjusted, so that the rocking error of the image point is in a reasonable range, and the function of the high precision prism reflector is realized.
Description
Technical field
The utility model belongs to laser measuring technique neck city, specifically the adjusting gear that picture point and reflector substrate overlap on schedule in a kind of prism reflector.
Background technology
Along with the development of modern age optics, electronics, the appearance in succession of various laser surveying instruments has alleviated surveying work person's labour intensity widely, has improved measuring accuracy, has accelerated operating rate.Yet how realizing high-acruracy survey in actual measurement, is the problem of deviser's main research at present and solution all the time.
As everyone knows, prism of corner cube uses as reflectance target in fields of measurement, and version is varied, electricity warp or total powerstation aiming reflecting prism are observed board sign center, after laser beam reflected through prism of corner cube, electricity calculated distance between the two after receiving, thereby realized the measurement of various parameters.
The inclination angle of prism of corner cube is inconsistent with the inclination angle of observing board in actual the use, and run-home and measurement light path not exclusively overlap, and the error that produces when high-acruracy survey be can not ignore.Therefore in the high measurement place of some accuracy requirements, often three seamed edges of sighting angle cone prism are by big face imaging (as Fig. 1) during actual measurement, so that the light path of the target of aiming and actual measurement overlaps, the minimizing measuring error improves measuring accuracy.In measurement, also have a factor can cause measuring error, prism of corner cube can be introduced the concept of the C of prism constant (in the design of prism reflector in actual use, the equivalent light path face of prism and the actual measurement face that needs do not overlap, distance between the two becomes the C of prism constant), actual measured value adds the corresponding modified value of prism constant in the measurement, obtain that we are actual to want the value measured, and then calculate the various parameters that we need.
The position of normally used corner cube reverberator as shown in Figure 2, under the situation of light normal incidence, actual measured value deducts the C of prism constant, just can obtain correct actual required separation distance; In actual the use, owing to reasons such as physical features, instrument antenna heights, can not accomplish light normal incidence, usually the position of prism reflector as shown in Figure 3, the angle that the optical axis center line of prism becomes with the reverberator vertical axis is α, the constant error of at first bringing is PD* (1-COS α), prism with normally used diameter 64 is example, prism constant is-30mm, when sighting angle under 20 ~ 30 ° situation, the constant error △ C that introduces is about 0.2mm, can ignore in the routine measurement, must consider the influence of this error in high-precision measurement; Secondly also bring the caused angle error of pointing error into, in short-range measurement performance obvious especially, we are example with the prism of diameter 64 also, range finding is at 30 ~ 50m, under 20 ~ 30 ° the situation, the angle error of its introducing is 5 ~ 10 at the inclination angle "; In high-acruracy survey because picture point and instrument vertical pivot do not overlap the composite measurement error of introducing can not ignore, verify through actual measurement, use same total powerstation (Lycra T2003) and same corner of table corner prism reflector fixing repeated measurement between 2, under the different angles of pitch, its error is about 0.3mm; Use same total powerstation (Lycra T2003) and many corners of table corner prism reflector fixing repeated measurement between 2, under the different angles of pitch, its composition error is greater than 0.5mm, and about 10% data are near 1mm.Therefore, when high-acruracy survey, reach the requirement except selecting total station accuracy for use, the choosing of prism reflector also will be satisfied the principle of design that picture point and reflector axis intersection point overlap.
Summary of the invention
Goal of the invention of the present utility model is in order to realize the high precision prism reflector, principle of design is followed design size and is satisfied picture point and the coincidence of shaft axis intersection point, for remedying the error of processing, assembling, the position of picture point can be finely tuned, to reach and focus axis overlaps, provide in a kind of prism reflector picture point and reflector substrate coincidence arrangement on schedule.Through labor and calculating, the distance P D that its source of error is mainly corner cube picture point and reflector axis intersection point causes, the prism reflector of the utility model design satisfies the condition (as Fig. 4) of PD=0, then alignment prism full-faced photo measuring accuracy can reach theoretical precision in actual applications, realize high-acruracy survey, measure composition error in the actual measurement less than 0.2mm.When prisms tilted (as Fig. 5), the constant error of introducing is 0mm, and pointing error is close to 0.
A kind of adjusting gear that on schedule overlaps for prism reflector picture point and reflector substrate of the utility model comprises: rotating shaft 1, and prism bracket 2, coupling shaft 3, prism frame 4, prism table 5, prism 6, rubber blanket 7, socket head cap screw 8, friction pad 9 is adjusted screw 10.Its connected mode is as follows: coupling shaft 3 is connected and fixed by screw thread and prism bracket 2; Prism frame 4 is installed on the prism bracket 2, and is fixing with socket head cap screw 8; Prism 6 is installed on the prism table 5, and screw 10 is fixing with adjusting; Prism table 5 is connected and fixed by screw thread and prism frame 4; Rubber blanket 7 is placed between prism frame 4 and the prism 6, fixes with silicon rubber; Friction pad 9 is put between picture frame 4 and the prism bracket 2, uses silica stationary.
A kind of adjusting gear that on schedule overlaps for prism reflector picture point and reflector substrate of the utility model, principle of work: principle of design of the present utility model is followed design size and is satisfied picture point and the coincidence of shaft axis intersection point, prism reflector satisfies the condition (as Fig. 4) of PD=0, alignment prism full-faced photo measuring accuracy reaches theoretical precision, realizes high-acruracy survey.Measure composition error in the measurement less than 0.2mm, when prisms tilted (as Fig. 5), the constant error of introducing is 0mm, and pointing error is close to 0, satisfies picture point and crossing point of axes and overlaps.Prism of the present utility model and prism table utilize 3 adjustment screws to be assembled into one, utilize connecting thread to be assemblied on the prism frame, adjust the adjustment that screw satisfies picture point X, Y-direction for 3, connecting thread satisfies the adjustment of picture point Z direction, reaches the design of picture point and crossing point of axes perfect registration.2 points of fixing at a distance of suitable distance are set during debugging, the prism reflector that sets up high precision total station respectively and pre-installed, the crest line intersection point of alignment prism, pitching and inclination prism make prism rotate around axis respectively, differentiate picture point and rock size and Orientation, adjust 3 and adjust screw and connecting thread, make the drunkenness error of picture point in reasonable range, and seal and fix with silica gel, to realize the high precision prism reflector.
The advantage of a kind of adjusting gear that on schedule overlaps for prism reflector picture point and reflector substrate of the utility model is: satisfy the principle of design that picture point and reflector axis intersection point overlap, reach high-acruracy survey; Simple in structure, stability is strong, with low cost, easy to process, has remedied the deficiency of screw thread mismachining tolerance, assembling is simple, be easy to outstanding feature such as batch process.Adopt rubber blanket 7 to be placed between prism frame 4 and the prism 6, to play shockproof fixation; Friction pad 9 is put between prism frame 4 and the prism bracket 2, and friction pad has the elastic property prism and can not rotate and can strengthen rubbing action; Crest line intersection point by alignment prism, pitching and inclination prism make prism rotate around axis respectively, differentiate picture point and rock size and Orientation, adjust 3 and adjust screw and connecting thread, make the drunkenness error of picture point in reasonable range, realize the function of high precision prism reflector.
Description of drawings
Fig. 1 is corner cube crest line figure;
Fig. 2 is the conventional prism horizontal survey location drawing;
Fig. 3 is the conventional prism inclination measurement location drawing;
Fig. 4 is the zero error prism horizontal survey location drawing;
Fig. 5 is zero error prisms tilted measuring position figure;
Fig. 6 is front view of the present utility model;
Fig. 7 is left view of the present utility model.
Embodiment
According to Fig. 6, shown in Figure 7, the utility model device comprises: rotating shaft 1, and prism bracket 2, coupling shaft 3, prism frame 4, prism table 5, prism 6, rubber blanket 7, socket head cap screw 8, friction pad 9 is adjusted screw 10.
According to Fig. 6, shown in Figure 7: described coupling shaft 3 is connected and fixed by screw thread and prism bracket 2; Prism frame 4 is installed on the prism bracket 2, and is fixing with socket head cap screw 8; Prism 6 is installed on the prism table 5, and screw 10 is fixing with adjusting; Prism table 5 is connected and fixed by screw thread and prism frame 4; Rubber blanket 7 is placed between prism frame 4 and the prism 6, uses silica stationary; Friction pad 9 is put between prism frame 4 and the prism bracket 2, seals and fixes with silica gel.
The course of work of the utility model instrument is: principle of design of the present utility model is followed design size and is satisfied picture point and the coincidence of shaft axis intersection point, prism reflector satisfies the condition (as Fig. 4) of PD=0, alignment prism full-faced photo measuring accuracy reaches theoretical precision, realizes high-acruracy survey.Measure composition error in the actual measurement less than 0.2mm.When prisms tilted (as Fig. 5), the constant error of introducing is 0mm, and pointing error is close to 0, satisfies picture point and crossing point of axes and overlaps.Adopt rubber blanket 7 to be installed between prism frame 4 and the prism 6 in the testing and measuring technology process, to play shockproof fixation; Friction pad 9 is put between prism frame 4 and the prism bracket 2, and prism can arbitrarily not rotate and can strengthen rubbing action; 2 points of fixing at a distance of suitable distance are set during operation, the prism reflector that sets up high precision total station respectively and pre-installed, the crest line intersection point of alignment prism, difference pitching and inclination prism, prism is rotated around axis, differentiate picture point and rock size and Orientation, adjust 3 and adjust screw and connecting thread, make the drunkenness error of picture point in reasonable range, thereby realize high-acruracy survey.
Claims (1)
1. one kind is used for prism reflector picture point and the adjusting gear that reflector substrate overlaps on schedule, it is characterized in that: comprising: rotating shaft (1), prism bracket (2), coupling shaft (3), prism frame (4), prism table (5), prism (6); Its connected mode is as follows: coupling shaft (3) is connected and fixed by screw thread and prism bracket (2); Prism frame (4) is installed on the prism bracket (2), and is fixing with socket head cap screw (8); Prism (6) is installed on the prism table (5), and is fixing with adjusting screw (10); Prism table (5) is connected and fixed by screw thread and prism frame (4); Rubber blanket (7) is placed between prism frame (4) and the prism (6), fixes with silicon rubber; Friction pad (9) is put between picture frame (4) and the prism bracket (2), uses silica stationary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709376 CN203069863U (en) | 2012-12-20 | 2012-12-20 | Adjusting device applied to coincidence of image point in prism reflector and reflector reference point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220709376 CN203069863U (en) | 2012-12-20 | 2012-12-20 | Adjusting device applied to coincidence of image point in prism reflector and reflector reference point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069863U true CN203069863U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220709376 Expired - Fee Related CN203069863U (en) | 2012-12-20 | 2012-12-20 | Adjusting device applied to coincidence of image point in prism reflector and reflector reference point |
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| Country | Link |
|---|---|
| CN (1) | CN203069863U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453841A (en) * | 2013-09-03 | 2013-12-18 | 广州建设工程质量安全检测中心有限公司 | Target reflection prism device provided with magnetic base |
| CN104296654A (en) * | 2014-09-26 | 2015-01-21 | 中国科学院光电研究院 | Device and method for detecting zero position installation errors of position detector of laser tracker |
| CN107526149A (en) * | 2017-09-26 | 2017-12-29 | 中国科学院国家天文台 | A kind of prism holder fastener |
| CN112162377A (en) * | 2020-09-29 | 2021-01-01 | 西安应用光学研究所 | Cubic prism every single move rotating device |
-
2012
- 2012-12-20 CN CN 201220709376 patent/CN203069863U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453841A (en) * | 2013-09-03 | 2013-12-18 | 广州建设工程质量安全检测中心有限公司 | Target reflection prism device provided with magnetic base |
| CN104296654A (en) * | 2014-09-26 | 2015-01-21 | 中国科学院光电研究院 | Device and method for detecting zero position installation errors of position detector of laser tracker |
| CN107526149A (en) * | 2017-09-26 | 2017-12-29 | 中国科学院国家天文台 | A kind of prism holder fastener |
| CN112162377A (en) * | 2020-09-29 | 2021-01-01 | 西安应用光学研究所 | Cubic prism every single move rotating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |